Register Map: Section 6.2 ZL30250, ZL30251 4-Input, 3-Output Any-to-Any Clock Multiplier and Frequency Synthesizer ICs Data Sheet January 2018 Ordering Information Features ZL30250LDG1 32 Pin QFN Trays Four Input Clocks ZL30250LDF1 32 Pin QFN Tape and Reel One crystal/CMOS input ZL30251LDG1 32 Pin QFN Trays ZL30251LDF1 32 Pin QFN Tape and Reel Two differential/CMOS inputs Matte Tin One single-ended/CMOS input Package size: 5 x 5 mm Any input frequency from 9.72MHz to 1250MHz (9.72MHz to 300MHz for CMOS) -40 C to +85 C Clock selection by pin or register control Precise output alignment circuitry and per- Low-Jitter Fractional-N APLL and 3 Outputs output phase adjustment Any output frequency from <1Hz to 1035MHz Per-output enable/disable and glitchless High-resolution fractional frequency conversion start/stop (stop high or low) with 0ppm error General Features Easy-to-configure, encapsulated design Automatic self-configuration at power-up from requires no external VCXO or loop filter external (ZL30250) or internal (ZL30251) components EEPROM up to four configs, pin-selectable Each output has independent dividers 2 SPI or I C processor Interface Output jitter as low as 0.16ps RMS (12kHz- Numerically controlled oscillator mode 20MHz integration band) Spread-spectrum modulation mode Outputs are CML or 2xCMOS, can interface to Tiny 5x5mm QFN package LVDS, LVPECL, HSTL, SSTL and HCSL Easy-to-use evaluation software In 2xCMOS mode, the P and N pins can be different frequencies (e.g. 125MHz and 25MHz) Applications Per-output supply pin with CMOS output Frequency conversion and frequency synthesis in voltages from 1.5V to 3.3V a wide variety of equipment types IC1P, IC1N HSDIV1 OC1P, OC1N HSDIV1 DIV1 APLL VDDO1 IC2P, IC2N HSDIV2 ~3.7 to 4.2GHz, OC2P, OC2N DIV2 Fractional-N NCO IC3P/GPIO3 HSDIV3 VDDO2 SS OC3P, OC3N Figure 6 HSDIV2 DIV3 XA xtal VDDO3 driver XB 2 Microprocessor Port (SPI or I2C Serial) and HW Control and Status Pins Figure 1 - Functional Block Diagram 1 Microsemi Confidential Copyright 2018. Microsemi Corporation. All Rights Reserved. RSTN AC0/GPIO0 AC1/GPIO1 TEST/GPIO2 IC3P/GPIO3 IF0/CSN IF1/MISO SCL/SCLK SDA/MOSI ZL30250, ZL30251 Data Sheet Table of Contents 1. APPLICATION EXAMPLES .......................................................................................................... 5 2. DETAILED FEATURES ................................................................................................................. 5 2.1 INPUT CLOCK FEATURES .............................................................................................................. 5 2.2 APLL FEATURES .......................................................................................................................... 5 2.3 OUTPUT CLOCK FEATURES ........................................................................................................... 5 2.4 GENERAL FEATURES .................................................................................................................... 5 2.5 EVALUATION SOFTWARE ............................................................................................................... 6 3. PIN DIAGRAM ............................................................................................................................... 6 4. PIN DESCRIPTIONS ..................................................................................................................... 7 5. FUNCTIONAL DESCRIPTION ...................................................................................................... 9 5.1 DEVICE IDENTIFICATION ................................................................................................................ 9 5.2 PIN-CONTROLLED AUTOMATIC CONFIGURATION AT RESET ............................................................. 9 5.2.1 ZL30250External EEPROM or No EEPROM ................................................................................... 10 5.2.2 ZL30251Internal EEPROM ............................................................................................................... 10 5.3 LOCAL OSCILLATOR OR CRYSTAL ................................................................................................ 10 5.3.1 External Oscillator ................................................................................................................................ 11 5.3.2 External Crystal and On-Chip Driver Circuit ........................................................................................ 11 5.3.3 Clock Doubler ....................................................................................................................................... 12 5.3.4 Ring Oscillator (for System Start-Up) ................................................................................................... 12 5.4 INPUT SIGNAL FORMAT CONFIGURATION ...................................................................................... 12 5.5 NUMERICALLY CONTROLLED OSCILLATOR / SPREAD SPECTRUM BLOCK (NCO/SS) ........................ 13 5.5.1 Numerically Controlled Oscillator (NCO) Mode ................................................................................... 13 5.5.2 Spread-Spectrum Modulation Mode .................................................................................................... 13 5.6 APLL CONFIGURATION ............................................................................................................... 14 5.6.1 APLL Input Selection and Frequency .................................................................................................. 14 5.6.2 APLL Output Frequency....................................................................................................................... 14 5.6.3 APLL Phase Adjustment ...................................................................................................................... 15 5.7 OUTPUT CLOCK CONFIGURATION ................................................................................................ 15 5.7.1 Output Enable, Signal Format, Voltage and Interfacing ...................................................................... 16 5.7.2 Output Frequency Configuration .......................................................................................................... 16 5.7.3 Output Duty Cycle Adjustment ............................................................................................................. 17 5.7.4 Output Phase Adjustment and Phase Alignment ................................................................................. 17 5.7.4.1 Phase Adjustment ......................................................................................................................... 17 5.7.4.2 Phase Alignment, Output-to-Output .............................................................................................. 18 5.7.4.3 Phase Alignment, Input-to-Output ................................................................................................ 19 5.7.5 Output Clock Start and Stop ................................................................................................................ 19 5.7.6 A-to-B Phase Offset Measurement ...................................................................................................... 20 5.8 MICROPROCESSOR INTERFACE ................................................................................................... 23 5.8.1 SPI Slave ............................................................................................................................................. 23 5.8.2 SPI Master (ZL30250 Only) ................................................................................................................. 25 2 5.8.3 I C Slave .............................................................................................................................................. 26 5.9 INTERRUPT LOGIC ...................................................................................................................... 28 5.10 RESET LOGIC .......................................................................................................................... 29 5.11 POWER-SUPPLY CONSIDERATIONS .......................................................................................... 29 5.12 AUTO-CONFIGURATION FROM EEPROM .................................................................................. 29 5.12.1 Generating Device Configurations ....................................................................................................... 29 5.12.2 Direct EEPROM Write Mode (ZL30251 Only) ..................................................................................... 30 5.12.3 Holding Other Devices in Reset During Auto-Configuration ................................................................ 30 2 Microsemi Confidential